如果我们继续对食物进行基因改造，我们就是在玩火。

We're ___playing ___with ___fire if we continue with genetic modification of our food.

别玩火了，否则第三次世界大战可能会以核战争的形式到来。

Stop ___playing ___with ___fire or World War 3 might come in [the] shape of a nuclear war.

投资于如此波动的市场就像玩火。

Investing in such volatile markets is like ___playing ___with ___fire.